2021 Biella Challenger Indoor IV – Doubles

Doubles
2021 Biella Challenger Indoor IV
Champions	Lloyd Glasspool Matt Reid
Runners-up	Denys Molchanov Sergiy Stakhovsky
Score	6–3, 6–4

Quentin Halys and Tristan Lamasine were the defending champions^[1] but only Halys chose to defend his title, partnering Lucas Pouille. Halys lost in the quarterfinals to Purav Raja and Tristan-Samuel Weissborn.

Lloyd Glasspool and Matt Reid won the title after defeating Denys Molchanov and Sergiy Stakhovsky 6–3, 6–4 in the final.

	First round							Quarterfinals							Semifinals							Final
	1	A Golubev Z Kolář	3	6	[8]
		G Barrère A Olivetti	6	4	[10]				G Barrère A Olivetti	77	2	[5]
		S Doumbia F Reboul	5	6	[7]				D Molchanov S Stakhovsky	61	6	[10]
		D Molchanov S Stakhovsky	7	3	[10]											D Molchanov S Stakhovsky	6	6
															3	B Bonzi H Nys	4	4
								3	B Bonzi H Nys	6	6
	WC	D Marrero A Menéndez Maceiras	712	63	[10]			WC	D Marrero A Menéndez Maceiras	4	2
		N Pasha M Schnur	610	77	[8]																		D Molchanov S Stakhovsky	3	4
		S Balaji L Margaroli	6	6																		4	L Glasspool M Reid	6	6
	WC	Lorenzo Claverie M Gigante	1	3					S Balaji L Margaroli	4	2
								4	L Glasspool M Reid	6	6
															4	L Glasspool M Reid	4	6	[10]
	Alt	A Santillan B Tomic	2	7	[3]											P Raja T-S Weissborn	6	4	[7]
		P Raja T-S Weissborn	6	5	[10]				P Raja T-S Weissborn	6	4	[10]
		Q Halys L Pouille	79	6					Q Halys L Pouille	4	6	[7]
	2	MÁ Reyes-Varela F Romboli	67	4

• Main draw